CKAN contains Improper Authentication leading to account takeover

published 2022-11-22 3 y ago modified 2026-06-17 4 mo ago also GHSA-m2xp-jxfg-qq6g , PYSEC-2022-42987 , EUVD-2022-0038

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

CKAN through 2.9.6 account takeovers by unauthenticated users when an existing user id is sent via an HTTP POST request. This allows a user to take over an existing account including superuser accounts.

Patch / fix

fixed in 2

pypi ckan 2.9.7
okfn ckan 2.8.12, 2.9.7

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-29)

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
pypi	ckan	<2.9.7	2.9.7

Classification

Weakness

CWE-862 Missing Authorization
CWE-287 Improper Authentication

References

ckan.org /
vendor-advisory, web
ckan.org /blog/get-latest-patch-releases-your-ckan-site-october-2022
web, release-notes, vendor-advisory, article
nvd.nist.gov /vuln/detail/CVE-2022-43685
advisory
ckan.org
web
github.com /ckan/ckan
package
github.com /pypa/advisory-database/tree/main/vulns/ckan/PYSEC-2022-42987.yaml
web
github.com /advisories/GHSA-m2xp-jxfg-qq6g
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary